I hope this is in the right place, I'm not in a hurry, just curious.
How can I find an equation for a line tangent to a point on a parabola without using calculus?
I just started playing with this this morning
The equation I'm using is y = x^2 - 4x - 2 and I'm looking for the equation of the tangent line at point ( 4, -2)
Using calculus I found the equation to be y = 4x -18
How can I do this without calculus?